Soak it in a bucket with a fish tank heater and Dawn Ultra dish soap for a couple of weeks before you bleach. You can see from the pic that there is still grease in the skull in front of the antlers. It will make a huge difference.

I made the mistake of rushing my daughter's first buck and didn't degrease it long enough and after sitting in a warm house for a few weeks, the grease started working it's way out, even after I clear coated it.
